Sickle-grinder.



J. P. KINE.

SIOKLE GRINDER.

APPLICATION FILED JULY 5, 1910.

Maxim/ Witnesses Inventor Attorneys JOHN P. KINE, OF WALSENBURG,COLORADO.

SICKLE-GRINDER.

T 0 all whom it may concern:

Be it known that I, JOHN P. KINE, a citizen of the United States,residing at at senburg, in the county of Huerfano and State of Colorado,have invented a new and useful Sickle-Grinder, of which the following isa specification.

This invention has relation to a sickle grinder and consists in thenovel construction and arrangement of its part as hereinafter shown anddescribed.

The object of the invention is to provide a device especially adapted tobe used for grinding the blades of a sickle bar adapted to be used uponreapers or mowers and with this object in view the device includes aframe upon which an abrading stone is mounted for rotation. Means areprovided for rotating the said stone at a relatively fast rate of speed.A holding device is mounted upon the frame and may be manuallymanipulated to move the sickle bar toward the stone horizontally or toraise and lower the sickle bar with relation to the stone.

In the accompanying drawings the figure is a perspective View of thesickle grinder.

The sickle grinder includes a frame 1, upon which a. stone 2 isjournaled for rotation. The stone 2 is provided with a convexedperiphery 3. A relatively small gear wheel 4 is fixed to the shaft oraxle of the stone 2 and meshes with a relatively large gear wheel 5journaled for rotation upon the frame 1. A handle 6 is attached to thegear wheel 5. Guide rods 7 are mounted upon the upper portion of theframe 1 and are approximately radially disposed with relation to thestone 2. Strips 8 are slidably mounted upon the guide rods 7 and a yoke9 is fixed in the vicinity of the ends of its intermediate portion tothe said strips 8. The end portions of the oke 9 are upwardly disposedin parallel re ation and are pro vided each with a series ofperforations 10. A rod 11 is adapted to be passed through registeringperforations 10 at the opposite end portions of the yoke 9. Arms 12 arepivotally mounted on the rod 11 and are connected together by means of across bar 13. The arms 12 are disposed toward the stone 2 and arelocated at the opposite sides thereof. Clips 14 are located upon thoseends of the arms 12 adjacent the stone 2 and are provided with clampingscrews 15. A

Specification of Letters Patent. Patented Sept. 27, 1910.

Application filed July 5, 1910.

Serial No. 570,412.

mediate portion of the yoke 9 and at its intermediate portion passesover the rod 11 and the other end of the said spring 16 bears againstthe under side of the cross bar 13. The spring 16 is under tension witha tendency to lift the cross bar 13 and the free ends of the arms 12. Astandard 17 is mounted upon the upper portion of the frame 1 and isprovided at its upper end with an internally threaded approximatelyhorizontal sleeve 18. A bolt 19 is screw tln'eaded in the sleeve 18 andat one end is journaled to a lug 20 fixed to the intermediate portion ofthe yoke 9. At its other end the bolt 19 is provided with a handle 21. Abail 22 is pivotally connected at its ends to the cross bar 13 at theopposite edges of the spring 16 and a coil spring 23 is connected at oneend to the lower intermediate portion of the said yoke 9. A verticallydisposed rod Q-t is fixed to one side of the frame 1 and a lever isfulcrumed at one end to the said rod 2t. The lower end of the coilspring 23 is connected with the intermediate portion of the said lever25. A vertically disposed rod 26 is attached to the side of the frame 1opposite the side thereof at which the rod 24 is attached and isprovided with a series of teeth 27 which are adapted to be engaged bythe free end portion of the lever 25.

In operation a sickle bar is placed be tween the free ends of the arms12 and the clips 14 in the manner as indicated in dotted lines in thefigure of the drawing and the clamping screws 15 are tightened downagainst the upper side of the bar. The free end of the lever 25 is thendepressed and through the coil spring 23 and the bail 22 the arms 12 areswung down against the tension of the spring 16 until the sickle bar isat the proper elevation. The bolt 19 is then turned so that the yoke 9and its attachments are advanced toward the stone 2 to the properextent. Then an operator turns the gear wheel 5 by grasping the handle 6and inasmuch as the wheel 5 meshes with the wheel 1 the stone 2 isrotated and the adjacent edges of two of the knives of the sickle barare ground simultaneously. During the grinding operation the free endportion of the lever 25 is engaged with the teeth 27 of the rod 26 andthus the arms 12 are held down in their proper position. The spring 23affords sufficient resiliency to permit the arms 12 to spring 16 isattached at one end to the inter- A move in an upward direction shouldthe stone 2 be not exactly concentrically positioned upon its axis oraxle. After the adjacent edges of two of the knives have beensufficiently ground the rotation of the stone 2 is interrupted and thefree end of the lever is disengaged from the teeth 27 and the said levertogether with the spring 23 and the bail 22 and arms 12 are permitted toswing in an upward direction under the tension of the spring 16. Thusthe sickle bar is automatically lifted away from the periphery of thestone 2. Therefore it will be seen that a device is provided wherein thecutting edges of the blades of a sickle bar may be ground in a preciseand a uniform manner and that the grinding operation may be accomplishedin a comparatively short length of time.

Having described my invention what I claim as new and desire to secureby Letters Patent is 2- 1. A grinder comprising a frame, an abra dingmember mounted for rotation thereon, guides mounted upon the frame, ayoke slidably mounted upon the guides, arms pivotally connected to theyoke, clamping devices carried by the arms, means for resilientlyholding the arms in an upper-most position, means for moving the yokealong the guides and holding the same in an adjusted position and meansfor holding the arms in a depressed position against the tension of thesaid resilient means for holding them in an uppermost position.

2. A grinder comprising a frame, an abrading member journaled upon theframe for rotation, guides located upon the frame, strips slidablymounted upon the guides, a yoke supported upon the strips, armspivotally connected With the yoke, clamping devices carried by the arms,means for resiliently holding the arms in an uppermost position, meansconnected with the frame and the yoke for moving the yoke along theguides and holding the same in an adjusted position and means forresiliently holding the arms in a depressed position against the tensionof the said means for resiliently holding the arms in an uppermostposition.

3. A grinder comprising a frame, an abrading member ournaled upon theframe, guides mounted upon the frame, strips slidably mounted upon theguides, a yoke fixed to the strip, arms pivotally connected to the yoke,clamping members carried by the arms, means for resiliently holding thearms in an uppermost position, means for moving the yoke along theguides and holding the same. in an adjustable position, a bail connectedwith the arms, a spring connected with the bail, a lever fulcrumed uponthe frame and connected with the said spring and means for holding thesaid lever in an adjusted position.

In testimony that I claim the foregoing as my own, I have hereto afiixedmy signature in the presence of two witnesses.

JOHN P. KINE.

\Vitnesses JOHN J. PRITCHARD, FRED I. IVALsEN.

